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Finding the Fourth Proportional to 17,307.81, 23,871.17 and 12,528.45

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Solution

The fourth proportional to 17,307.81, 23,871.17 and 12,528.45 is: 17,279.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,307.81 : 23,871.17 = 12,528.45 : x
  2. Step 2: Convert to fraction form
    17,307.81/23,871.17 = 12,528.45/x
  3. Step 3: Cross multiply
    17,307.81x = 23,871.17 × 12,528.45
  4. Step 4: Simplify right side
    17,307.81x = 299,068,791.11
  5. Step 5: Solve for x
    x = 299,068,791.11/17,307.81
  6. Step 6: Final answer
    x = 17,279.41

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.